Nuctech Company Limited

Tsinghua University

Other

Huawei Technologies Co., Limited

Nutech Company Limited

Tencent Technology (shenzhen) Company Limited

Nuctech Jiangsu Company Limited

Cints Co., Ltd.

Hytera Communications Corporation Limited

Beijing Friendship Hospital, Capital Medical University

Nuray Technology Co., Ltd

Crsc Research & Design Institute Group Co., Ltd.

Grandpect Company Limited

Nectech Company Limited

Sonoscape, Inc.

Zhiqiang Chen

Yuanjing Li

Ziran Zhao

Li Ni Zhang

Yinong Liu

Yaohong Liu

Qingjun Zhang

Kejun Kang

Wanlong Wu

Yuxiang Xing

Jianmin Li

Haifeng Hu

Qingping Huang

Shangmin Sun

Hua Peng

Jianping Gu

Qiufeng Ma

Yulan Li

Xin Jin

Yunda Sun

Jianping Chang

Xiang Zou

Xuewu Wang

Liang Li

Yingkang Jin

Xilei Luo

Bin Sang

Weiping Zhu

Ming Ruan

Ge Li

Jinyu Zhang

Quanwei Song

Junli Li

Chuanxiang Tang

Biao Cao

Qitian Miao

Qiang Li

Guang Yang

Chunguang Zong

Huaping Tang

Ying Li

Yumin Yi

Hu Tang

Yu Hu

Li Zhang

Huaibi Chen

Bin Hu

Ming Chang

Shuo Wang

Zhijun Li

Jin Ping Lin

Bicheng Liu

Jian Zhang

Hao Yu

Yan Zheng

Wei Li

Ming Hu

Nan Jiang

Hongqiu Wang

Weifeng Yu

Yonggang Wang

Yangtian Zhang

Li Feng Zhang

Hui Li

Lan Zhang

Hong Wang

Yi Wang

Yue Li

Hui Zhang

Bo Li

Feng Gao

Yuan He

Juan Zheng

Cong Liu

Tongtong Wang

Wei Wang

Tao Wang

Rui Fan

Hui Jin

Bo Zhang

Jian Li

Yan Wang

Jing Li

Dong Li

Lin Y Yang

Kai Wang

Hong Mei Zhang

Hui Yang

Tao Yang

Hui Xing Wang

Zheng Li

Ke Zhao Li

Meng Wang

Min Li

Jie Shi

Dawei Shi

Yu Wang

Jianjun Li

Wenbin Yang

Haitao Jiang

A method of inspecting a vehicle includes: acquiring a to-be-inspected image of an inspected vehicle (S); acquiring a visual feature of the to-be-inspected image using a first neural network model (S); retrieving a template image from a vehicle template library based on the visual feature of the to-be-inspected image (S); determining a variation region between the to-be-inspected image and the template image (S); and presenting the variation region to a user (S). The system of inspecting a vehicle includes a radiation imaging device (), a display device (), an image processor (), and a storage device (). The present disclosure further includes a computer-readable storage medium.

Method and system of inspecting vehicle

The present application relates to a deflection electrode assembly, an X-ray source, and an X-ray imaging system. The deflection electrode assembly includes: a first electrode plate, including a first connection portion and a plurality of first tooth portions, wherein the first electrode plate is formed as a comb shape; and a second electrode plate, including a second connection portion and a plurality of second tooth portions, wherein the second electrode plate is formed as a comb shape. The first electrode plate and the second electrode plate are not in contact with each other, and the plurality of first tooth portions and the plurality of second tooth portions are arranged at least partially in a staggered manner to form a plurality of electron beam passageways; each electron beam passageway is located between adjacent first and second tooth portions.

Deflection electrode assembly, X-ray source, and X-ray imaging system

A conveying device () and an inspection system () are provided. The conveying device includes: a first support frame (); a first conveying mechanism () and a second conveying mechanism () which are installed on the first support frame; and a switching mechanism () configured to selectively lift the first conveying mechanism or the second conveying mechanism in a vertical direction, such that the first conveying mechanism or the second conveying mechanism carries goods () and conveys the goods in a first horizontal direction or a second horizontal direction different from the first horizontal direction. The conveying device may achieve a positioning and a smooth continuous conveying of goods, and achieve a smooth conveying and a calibrated positioning of the goods in different postures.

Conveying device and inspection system

A trace detection device including: an ion mobility tube; a sampling gas path module; a sample injection gas path module configured to introduce a sample carrier gas containing a sample collected by the sampling gas path module toward the ion mobility tube; and a gas chromatography apparatus capable of pre-separating the sample carrier gas, so as to form a pre-separated sample carrier gas; wherein the sample injection gas path module is further configured to be capable of switching between a first mode and a second mode, in the first mode, the sample injection gas path module introduces the sample carrier gas into the ion mobility tube; and in the second mode, the sample injection gas path module introduces the sample carrier gas into the gas chromatography apparatus to pre-separate the sample carrier gas, and the pre-separated sample carrier gas is introduced into the ion mobility tube.

Trace detection device

Disclosed is an adaptive control method and system for train operating condition identification. The method includes acquiring train operating state data under various traction conditions and calculating traction and braking performance data. An adhesion condition characteristic data set is formed, and train adhesion conditions are divided into Ngrades based on this data set, where Nis a natural number. The current adhesion condition grade Nis identified using the number of adhesion condition grades and current operating state data, where N≤N, establishing a mapping relationship between an adhesion coefficient and maximum deceleration for braking under the identified grade. An optimal train protection curve is generated. By clustering and grading adhesion conditions through a clustering algorithm, the method achieves more accurate adhesion condition analysis. Adaptively generating optimal train protection curves based on adhesion condition grades enhances the reliability and safety of train operations.

Adaptive control method and system based on train operating condition identification

The present invention relates to a backscatter imaging device, a control method and an inspection system. The backscatter imaging device includes a ray source assembly configured to emit rays to a scanning area; a backscatter detector array including a plurality of backscattering detectors and configured to receive scattered photons when the rays are backscattered by an object within the scanning area; and a first collimator assembly including a plurality of first collimating channels corresponding to the plurality of backscatter detectors respectively, arranged on one side of the backscatter detector array adjacent to the scanning area, and configured to align the scattered photons when the rays are backscattered by the object, and the plurality of backscatter detectors receive scattered photons corresponding to a plurality of depths in the object respectively; and at least part of the plurality of first collimation channels have an adjustable collimation angle.

Backscatter imaging device, control method and inspection system

Provided are a CT scanning method and system, an electronic device, and a computer-readable storage medium. The method includes: determining a first coordinate of a mark point of a part to be imaged in a dual-camera coordinate system; converting the first coordinate into a second coordinate of the mark point in a CT coordinate system according to coordinate system transformation parameters; generating first locating information according to the second coordinate to drive a scanning table to move to a first location designated by the first locating information; obtaining projection images of the part to be scanned; determining second locating information and scanning information of the part to be scanned according to the projection images; and driving the scanning table to move to a second location designated by the second locating information according to the second locating information and performing CT scanning according to the scanning information.

CT scanning method and system, electronic device, and computer-readable storage medium

Embodiments of the present application disclose an optical fiber connection detection method and a related device. A first network device obtains first label information, which indicates a target optical output interface, and the target optical output interface is one of at least one optical output interface of the first network device; the first network device generates an optical signal, where a wavelength of the optical signal is within a wavelength range corresponding to the target optical output interface; the first network device modulates the first label information onto the optical signal, to generate a modulated optical signal; and the first network device sends the modulated optical signal from the target optical output interface to a target optical input interface of a second network device, to detect an optical fiber connection relationship between the target optical output interface and the target optical input interface.

Optical fiber connection detection method and related device

The method includes: receiving an encoder signal and a ray machine output beam signal, and initially synchronizing the encoder signal and the ray machine output beam signal; recording coded value M of the encoder at moment t, and coded value N of the encoder at moment t, where M, N, and m are integers; determining that duration from the moment tto the moment tis an actual output beam time interval T of the ray machine, when it is determined that a difference value between the coded value M and the coded value N satisfies preset value a, a being an integer; determining gap time Tin the actual output beam time interval T based on a preset output beam time interval Tof the imaging system and the actual output beam time interval T; and controlling the ray machine not to emit beam within the gap time T.

Method and device for controlling output beam of ray machine in imaging system, and CT imaging system

A security inspection apparatus and a method of controlling the same are described. An example security inspection apparatus includes a bottom plate configured to carry an inspected object and a two-dimensional multi-input multi-output array panel, including at least one two-dimensional multi-input multi-output sub-array. Each two-dimensional multi-input multi-output sub-array includes transmitting antennas and receiving antennas arranged such that equivalent phase centers are arranged in a two-dimensional array. The security inspection apparatus includes a control circuit configured to control the transmitting antennas to transmit a detection signal in a form of an electromagnetic wave to the inspected object in a preset order, and to control the receiving antennas to receive an echo signal from the inspected object. The security inspection apparatus includes a signal processing device configured to reconstruct an image of an inspected object based on an echo signal received and a display device configured to display the reconstructed image.

Security inspection apparatus and method of controlling the same

A semantic-based method and apparatus for retrieving a perspective image, an electronic device and a computer-readable storage medium are provided. An method includes obtaining a perspective image for a space containing an inspected object therein. A semantic division on the perspective image is performed using a first method, to obtain a plurality of semantic region units. A feature extraction network is constructed using a second method. Based on the perspective image and each of the plurality of semantic region units, a feature of each semantic region unit is extracted using the feature extraction network. Based on the feature of each semantic region unit, an image most similar to the semantic region unit is retrieved from an image feature database, to assist in determining an inspected object in the semantic region unit.

Semantic-based method and apparatus for retrieving perspective image

The present disclosure provides a method of determining a distance and a height, including: measuring, a first distance, a second distance and a third distance from the security inspection device to the tested person as well as measuring a first height, a second height and a third height of the tested person; determining, a relationship between the first distance and a minimum distance threshold as well as a maximum distance threshold, a relationship between the second distance and the minimum distance threshold as well as the maximum distance threshold, and a relationship between the third distance and the minimum distance threshold as well as the maximum distance threshold; determining, a final distance from the security inspection device to the tested person and a final height of the tested person; and performing a pixel conversion and a size conversion on the pupil image of the tested person.

Method and device of determining distance and height based on a plurality of sensors

The present disclosure provides a gas analysis device and a method for detecting sample gas. The gas analysis device includes: an ion mobility spectrometer including an ion mobility tube, an ion gate, a plurality of electrodes, a suppression grid, and a Faraday plate sequentially disposed in the ion mobility tube, wherein the Faraday plate is configured to receive sample ions discharged from the suppression grid, and the Faraday plate is provided with a through hole; a mass spectrometer; a gate valve disposed between the Faraday plate and an ion inlet of the mass spectrometer; and a controller configured to control an opening or closing of the gate valve to allow the sample ions discharged from the suppression grid to flow into the mass spectrometer through the through hole of the Faraday plate when the gate valve is opened.

Gas analysis device and method for detecting sample gas

An embodiment of the present disclosure discloses a wireless charging device comprising a wireless receiving module, a controller, a first charging module, and a second charging module. The wireless receiving module is configured to receive a wireless charging signal in response to the wireless charging device being in a wireless sensing area, transmit a state indication signal to the controller, receive a charging indication signal from the controller, and determine whether to transmit the wireless charging signal to the first charging module according to the charging indication signal. The controller is configured to transmit the charging indication signal to the wireless receiving module according to the state indication signal, and in response to the charging indication signal instructing the wireless receiving module to transmit the wireless charging signal, output a control signal to the first charging module to control the first charging module to receive the wireless charging signal, charge the second charging module, and output an electrical signal. The first charging module is configured to, in response to receiving the control signal, receive the wireless charging signal, charge the second charging module, and output the electrical signal.

Wireless charging device, the method thereof and security device including wireless charging device

A boundary protection method and system of a radiation detection robot. The boundary protection method comprises: a first laser radar and a second laser radar are arranged diagonally, a first marking rod and a second marking rod are arranged diagonally; a boundary of an interlocking zone is defined by the first laser radar, the second laser radar, the first marking rod and the second marking rod; the object to be detected is placed in the interlocking zone; the radiation detection robot uses rays to detect the object to be detected in the interlocking zone; an early warning zone is provided outside the interlocking zone; wherein when it is detected that a person or object has intruded into the interlocking zone, the radiation detection robot stops emitting rays; and when it is detected that a person or object has intruded into the early warning zone, a warning is issued directly.

Boundary protection method and system of radiation detection robot

Growing community of inventors

Beijing, China

Zhiqiang Chen